Lens Array Module Integrated Positioning Walls
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Solution Overview
Problem
Conventional imaging apparatuses face positioning challenges due to independent spacers and lens wafers, leading to inevitable offsets and affected optical axis alignment, which impact image quality and reconstruction accuracy.
Innovation Solution
A lens array module design featuring a housing with arrayed optical elements and a light sensor array, where the optical elements include a light blocking frame and a lens unit with upper positioning walls that extend beyond the surrounding wall, allowing precise alignment and reduced assembly tolerance, thereby maintaining accurate optical axis positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If spacers and lens wafers are used as independent separate components, then assembly flexibility is improved, but positioning precision deteriorates due to inevitable offsets during assembly
Solution Approach 1:
The spacer structure is merged with the lens wafer to form an integrated unit. The housing includes integrated spacer portions that are formed as one piece with the lens wafer, eliminating the need for separate spacer components. This integration ensures that the lens wafer and spacer maintain a fixed relative position, preventing assembly offsets while preserving manufacturing efficiency.
2Adaptability or versatility
If multiple separate components (spacers and blocking members) are used to position lens wafers, then structural flexibility is improved, but assembly complexity increases and positioning accuracy deteriorates
Solution Approach 1:
The spacer and blocking member functions are merged into a single integrated housing structure. The housing includes both spacer portions for vertical positioning and blocking member portions for lateral positioning, all formed as one piece with the lens wafer. This integration reduces the number of separate components and simplifies assembly while maintaining structural flexibility.
Solution Approach 2:
The integrated housing structure performs multiple functions simultaneously: it provides spacers for vertical positioning, blocking members for lateral positioning, and structural support. This multi-functional design eliminates the need for separate dedicated components for each function, reducing assembly complexity.
3Device complexity
If spacers and blocking members abut against lens wafers for positioning, then positioning mechanism is simplified, but positioning precision deteriorates due to height offsets among components
Solution Approach 1:
The spacer and blocking member are merged into an integrated housing structure formed as one piece with the lens wafer. This integration eliminates the height offset problems that arise from assembling separate components, as the integrated structure ensures consistent dimensional relationships between all positioning features.
Solution Approach 2:
The housing is pre-formed as an integrated unit with precisely controlled dimensional relationships between spacer portions, blocking member portions, and the lens wafer. This preliminary formation of the complete positioning structure eliminates the need for subsequent assembly adjustments and ensures accurate optical axis positioning.
Data Source
AI summary
A lens array module includes an arrayed optical element including a light blocking frame and a lens unit, and a light sensor array unit. The light blocking frame includes a bottom plate with multiple through holes, a surrounding wall, and a partition wall integrally connected to and cooperating with the bottom plate and surrounding walls to define multiple optical channels. The lens unit includes a substrate abutting against the bottom plate and including multiple lens elements that are aligned respectively with the through holes, and a plurality of upper positioning walls integrally connected to the substrate. The light sensor array unit includes multiple light sensing components respectively aligned with the lens elements.